dont run coverage if publishing

package.json

@@ -8,7 +8,7 @@
     "test": "mocha-webpack \"src/**/*.ts\"",
     "test.coverage": "nyc npm test",
     "test.watch": "npm test -- --watch",
-    "prepublishOnly": "npm run build",
+    "prepublishOnly": "npm run build --production",
     "lint": "tslint --project .",
     "build": "npm run webpack && npm run fix-types",
     "tsc": "rimraf ./build && tsc -p .",

webpack.config.ts

@@ -22,14 +22,17 @@ module.exports = {
                 test: /\.ts$/,
                 loaders: ["awesome-typescript-loader"],
             },
-            {
             // For coverage testing
+            ...(process.env.NODE_ENV !== "production"
+                ? [{
                     test: /\.(ts)/,
                     include: path.resolve("src"),
                     loader: "istanbul-instrumenter-loader",
                     enforce: "post",
                     exclude: [/node_modules/],
-            },
+                }]
+                : []
+            )
         ],
     },